1 verified Physiology specialist

Physiology Assignment Help & Online Tutoring

In short: FLN Tutors gives physiology assignment help and tutoring from A-Level to master's level. Tutors explain cell and nerve physiology, muscle, the cardiovascular, respiratory, renal, digestive and endocrine systems and homeostasis step by step, work through physiology calculations and help you write lab reports and essays in your own words. Matched to a verified specialist who knows your course, your university's marking criteria, and your deadline.

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Physiology

12 topics

Topics we cover

Cell physiology
Membrane transport
Action potentials
Muscle contraction
Cardiac cycle
Blood pressure regulation
Respiratory mechanics and gas exchange
Renal physiology
Acid-base balance
Endocrine physiology
Digestive physiology
Homeostasis and feedback

Don't see your topic?

160+

Topics covered

Physiology specialists

14 hours

Avg. delivery

Online Physiology tutoring

FLN offers one-to-one online Physiology tutoring with verified subject specialists. Sessions focus on core theory, clinical application and exam preparation, including Cell physiology, Membrane transport, Action potentials and Muscle contraction, using your own course material, so you understand the subject and can apply it yourself.

Last updated 27 October 2026

Levels we tutor

Undergraduate
Master's
PhD

What is physiology?

Physiology is the study of how living organisms work: how cells, tissues, organs and systems function and are controlled to keep the body stable. Human physiology is a core subject in biomedical science, medicine, nursing, pharmacy, physiotherapy and sports science.

Cell physiology: membranes, transport and membrane potentials
Excitable tissues: nerves, synapses and muscle
Body systems: cardiovascular, respiratory, renal, digestive, endocrine and reproductive
Control: homeostasis, feedback loops and integration between systems
Applied physiology: exercise, environment and the basis of disease

What is physiology help?

Physiology help is one-to-one support from a tutor who explains each method step by step, works through problems from your own course and shows you how marks are awarded. At FLN Tutors it covers live online tutoring, worked homework solutions and guidance on physiology assignments, so you understand the method and can use it yourself in the exam.

What you need	Best option	What you get
Regular lessons through a physiology course	Live one-to-one tutoring	A tutor explains the method on a shared whiteboard at your pace
A few questions you are stuck on	Homework help	Step-by-step worked solutions you can learn from
A graded physiology lab report, essay or data question	Assignment help	Tutor guidance, feedback and model workings within your university's rules

Get a free physiology quote.

Physiology topic map: where students get stuck

This map lists the core physiology topics, the point where students most often get stuck, and how a tutor helps you past it.

Topic	Where students get stuck	How a tutor helps
Membrane transport	Osmosis, diffusion and active transport differences	Diagrams linked to real examples in the body
Membrane potentials	Resting potential and the action potential sequence	A step-by-step ion channel timeline
Muscle physiology	Excitation–contraction coupling	A labelled sequence from nerve impulse to cross-bridge
Cardiovascular system	Cardiac cycle and pressure–volume changes	Wiggers diagram explained phase by phase
Respiratory system	Ventilation, gas exchange and the oxygen dissociation curve	Worked calculations and curve shifts
Renal physiology	Filtration, clearance and countercurrent multiplication	Nephron maps with clearance calculations
Endocrine system	Hormone axes and feedback	Flow charts for each axis
Homeostasis	Linking systems in an integrated answer	Feedback loop templates applied to examples

Physiology topics we help with

Tutors cover every body system and the control mechanisms that link them.

System	Topics
Nervous system	Neurons, action potentials, synapses, reflexes, the autonomic nervous system
Muscle	Skeletal, cardiac and smooth muscle, the sliding filament theory
Cardiovascular	Cardiac cycle, ECG, cardiac output, blood pressure regulation
Respiratory	Mechanics of breathing, lung volumes, gas exchange, control of breathing
Renal	Glomerular filtration, tubular reabsorption, clearance, acid–base balance
Digestive	Motility, secretion, digestion and absorption
Endocrine	Pituitary, thyroid, adrenal and pancreatic hormones
Reproductive	Hormonal control, the menstrual cycle and pregnancy
Integrated physiology	Exercise, temperature regulation, fluid balance

Worked example: cardiac output and mean arterial pressure

Two calculations that come up in cardiovascular physiology. Illustrative resting values only.

Question	Working	Answer
Heart rate 70 beats/min, stroke volume 70 mL. Find cardiac output.	CO = HR × SV = 70 × 70 mL/min	4,900 mL/min ≈ 4.9 L/min
Blood pressure 120/80 mmHg. Estimate mean arterial pressure.	MAP ≈ DBP + ⅓(SBP − DBP) = 80 + ⅓ × 40	≈ 93 mmHg
Why not simply average 120 and 80?	The heart spends longer in diastole than systole at rest	So MAP is closer to the diastolic pressure

Worked example: ventilation and renal clearance

Two more standard calculations. Illustrative values only.

Question	Working	Answer
Tidal volume 500 mL, 12 breaths/min. Find minute ventilation.	500 mL × 12	6.0 L/min
Anatomical dead space 150 mL. Find alveolar ventilation.	(500 − 150) mL × 12	4.2 L/min
Inulin: urine 30 mg/mL, urine flow 1 mL/min, plasma 0.25 mg/mL. Find GFR.	Clearance C = (U × V) ÷ P = (30 × 1) ÷ 0.25	120 mL/min

Inulin is filtered but neither reabsorbed nor secreted, which is why its clearance measures GFR.

Worked example: the potassium equilibrium potential

Use the Nernst equation at body temperature (37 °C), where E = 61.5 × log₁₀([ion]outside ÷ [ion]inside) mV for a monovalent cation. Illustrative concentrations: K⁺ outside 5 mM, inside 140 mM.

Step	Working
Ratio	5 ÷ 140 ≈ 0.0357
Logarithm	log₁₀ 0.0357 ≈ −1.447
Equilibrium potential	E_K ≈ 61.5 × (−1.447) ≈ −89 mV

The resting membrane potential (around −70 mV in many neurons) is close to, but less negative than, E_K, because the membrane is also slightly permeable to Na⁺.

Physiology help at every level

Tutors match your level, syllabus and exam board, from school to PhD.

Level	What you study	Matching help
GCSE and IGCSE	Organisation, the heart and lungs, the nervous and hormonal systems, homeostasis	GCSE AQA Biology, IGCSE Biology (Cambridge)
A-Level and IB	Gas exchange, mass transport, nerve impulses and synapses, muscle contraction, homeostasis and the kidney	A-Level AQA Biology, IB Biology SL
Undergraduate (biomedical, nursing, medicine, sports science)	Systems physiology, practical classes, data analysis and integrated physiology	Human Physiology I, homework help, lab report help
Master's	Advanced and clinical physiology, exercise physiology, research projects	Assignment help and live tutoring
PhD	Experimental design, data analysis and thesis writing	Dissertation help

Where do students lose marks in physiology?

Most lost marks in physiology come from vague mechanisms and steps described in the wrong order.

Mark-loser	What to do instead
Describing what happens but not why	Explain the mechanism, such as which ion channels open and why
Steps of a process out of order	Use a numbered sequence for processes such as the action potential
Confusing similar terms	Distinguish pressure and flow, osmolarity and tonicity, filtration and reabsorption
Calculations without units	Keep units through every step
Graphs without explanation	Describe the trend, then explain it physiologically
Isolated systems in integration questions	Link the systems involved, such as heart, lungs and kidneys in exercise

What physiology assessments look like, and what markers want

Physiology is assessed in several formats, and each one is marked on different things. Tutors help you understand the brief and the marking criteria before you start.

Assessment	What markers look for
Exams (MCQ, short answer, essay)	Accurate mechanisms, correct terminology and labelled diagrams
Practical write-ups and lab reports	Accurate data, correct calculations, graphs and a discussion linked to physiology
Data-interpretation questions	Correct reading of traces such as ECGs, spirometry and pressure graphs
Essays and literature reviews	A focused, evidence-based argument using current research
Case-based assessments	Applying normal physiology to explain a patient's signs and symptoms

Tools and software for physiology

Physiology practicals use recording equipment and analysis software.

Tool	What it is used for
PowerLab with LabChart	Recording ECG, EMG, blood pressure and spirometry in teaching labs
Spirometers and ECG equipment	Measuring lung volumes and heart activity
Excel, GraphPad Prism or R	Calculations, statistics and graphs
Physiology simulation software	Virtual experiments where live practicals are not possible
PubMed and reference managers	Finding and citing research papers

Tutors support physiology modules in biomedical science, medicine, nursing, pharmacy, physiotherapy, dentistry and sports science, linking normal function to disease and treatment.

Country notes: studying physiology outside the UK?

Physiology is taught to similar core ideas worldwide, but grading, referencing and course structure differ. FLN tutors work from your own syllabus and handbook and schedule lessons in your time zone. Always follow your module handbook for referencing.

Country	Where physiology is studied	Grading	Referencing usually used
United Kingdom	A-Level Biology, BSc Physiology and Biomedical Science, medicine and nursing	GCSE 9–1, A-level A*–E; degrees First, 2:1, 2:2, Third	Harvard or Vancouver
United States	AP Biology, undergraduate physiology, pre-med and nursing	Letter grades A–F and a 4.0 GPA scale	APA (nursing) or AMA (medicine)
Australia	BSc physiology and health science units	HD, D, C, P at university; ATAR for school leavers	APA or Vancouver
Canada	BSc Physiology and health sciences	Letter grades or percentages; GPA scales vary by province and university	APA
India	MBBS physiology, BSc Nursing, BPT and BSc courses	Board exam percentages; university CGPA, often on a 10-point scale	Vancouver or APA

Students in Ireland, the Gulf, Europe, Africa and Asia can book the same help, with lessons in their own time zone.

How much does physiology help cost?

The price of physiology help depends on the type of task, its length and your deadline. A short set of physiology calculations costs less than a full referenced lab report. You always see the price first: a fixed quote for homework and assignment guidance, or the tutor's hourly rate for live lessons, with no contract and no minimum number of sessions. Refunds follow our refund policy.

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Stuck on a Physiology question?

Send it to a Physiology tutor for step-by-step working. The quote is free.

What you get

Every Physiology order includes

Written from scratch to your exact brief
Fully referenced in your required citation style
Plagiarism-checked before delivery
Free revisions until you are satisfied
100% confidential — your privacy protected

3 hours

Fastest delivery

170+

Verified experts

97%

Satisfaction rate

Free, unlimited

Revision policy

Simple process

How your Physiology help works

Describe your Physiology task

Tell us your assignment brief, word count, deadline, and academic level. The more detail, the better the match.

Matched to a specialist

We pair you with a Physiology expert whose background aligns with your specific topic and university requirements.

Delivered, checked, revised

Your work arrives before the deadline, plagiarism-checked. Free revisions until it meets your exact requirements.

Takes about two minutes. The quote is free.

Physiology and related specialists

Who handles your Physiology work

Every expert is degree-verified and quality-tested before joining.

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Physiology tutoring: frequently asked questions

Can you help with a physiology lab report?

Yes. Tutors help you structure your own report, calculate and present results correctly and write a discussion linked to physiological mechanisms.

What is homeostasis?

Homeostasis is the maintenance of a stable internal environment, such as body temperature, blood glucose and blood pressure, mainly through negative feedback.

What is the difference between negative and positive feedback?

Negative feedback reverses a change to restore a set point; positive feedback amplifies a change, as in blood clotting and childbirth.

How does an action potential work?

A stimulus opens voltage-gated Na⁺ channels, Na⁺ rushes in and depolarises the membrane; then Na⁺ channels inactivate and K⁺ channels open, repolarising it, followed by a brief hyperpolarisation.

How do I calculate cardiac output?

Cardiac output = heart rate × stroke volume. At rest, 70 beats/min × 70 mL gives about 4.9 L/min.

What happens during the cardiac cycle?

The heart alternates between systole, when the ventricles contract and eject blood, and diastole, when they relax and fill. Valves open and close in response to pressure differences.

What shifts the oxygen dissociation curve to the right?

Higher carbon dioxide, higher temperature, lower pH and more 2,3-BPG shift the curve right, so haemoglobin releases oxygen more easily to active tissues.

What is GFR and how is it measured?

GFR is the volume of plasma filtered by the kidneys per minute, about 120 mL/min in a healthy adult. It is measured by the clearance of a substance such as inulin, or estimated from creatinine.

How does the sliding filament theory work?

Calcium released in the muscle fibre exposes binding sites on actin; myosin heads form cross-bridges, pull the actin filaments and detach using ATP, shortening the sarcomere.

What is the difference between the sympathetic and parasympathetic nervous systems?

The sympathetic system prepares the body for action (fight or flight), while the parasympathetic system supports rest and digestion. Most organs receive both.

How are blood glucose levels controlled?

When glucose rises, the pancreas releases insulin, which promotes glucose uptake and storage; when it falls, glucagon promotes glucose release from the liver.

What is the Nernst equation used for?

The Nernst equation calculates the equilibrium potential for a single ion from its concentrations inside and outside the cell.

Can you help with ECG interpretation in physiology?

Yes. Tutors explain the P wave, QRS complex and T wave, intervals, and how to calculate heart rate from an ECG trace.

What is the difference between physiology and anatomy?

Anatomy studies the structure of the body; physiology studies how those structures work and are controlled.

Do you help nursing students with physiology?

Yes. Tutors explain physiology for nursing courses in clear, clinical terms, linked to patient care.

Do you help with exercise physiology?

Yes. Tutors cover energy systems, cardiovascular and respiratory responses to exercise, VO₂ max and training adaptations.

Can you help with a physiology essay?

Yes. Tutors help you plan your argument and find current research, so you write it in your own words.

Can I get physiology help the same day?

Often, yes. Short questions can usually be explained the same day, depending on tutor availability.

Is it allowed to get physiology help?

Yes. Tutoring, worked examples and feedback are a normal part of learning. You should use the explanations to understand the method and submit your own work in line with your school's or university's academic integrity rules. See our academic integrity policy.